High strain rate characterisation of unidirectional carbon-epoxy IM7-8552 in longitudinal compression

• Tipo: Artigo em Revista Científica Internacional
• Data: 2011

Autores

Koerber, H (Autor) Outra; Camanho, PP (Autor) FEUP

Revista

Título: Composites Part A: Applied Science and Manufacturing

Vol. 42

Páginas: 462-470

ISSN: 1359-835X

Editora: Elsevier

Indexação

ISI Web of Knowledge - 71 Citações

ISI Web of Science

Scopus - 96 Citações

Classificação Científica

FOS: Ciências da engenharia e tecnologias > Outras ciências da engenharia e tecnologias

CORDIS: Ciências Tecnológicas > Engenharia > Engenharia aeroespacial

Outras Informações

ID Authenticus: P-002-S5Z

DOI: 10.1016/j.compositesa.2011.01.002

Abstract (EN): This paper presents an experimental investigation of the strain rate effect on unidirectional carbonepoxy IM7-8552 loaded in longitudinal compression. A dynamic compression fixture was developed for a split-Hopkinson pressure bar to test flat rectangular specimens. The dynamic experiment was designed by finite element analysis, using an axis-symmetric elastic model of the test setup. Due to the linear specimen stress-strain behaviour, ramp-shaped incident pulses were used, to ensure a constant strain rate and dynamic equilibrium throughout the test. The results from the split-Hopkinson pressure bar experiments at an average strain rate of about 100 s(-1) were compared with quasi-static test results using the same test setup. It was found that the longitudinal compressive modulus is not strain rate sensitive while a significant increase was observed for the longitudinal compressive strength.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 9